Hide item tooltips of "blank" items in Factions GUIs

In some GUIs (Kits, Lootboxes), if you hover over glass panes, they have no tooltip In the Factions plugin GUIs (/f perms, /f list, /f top, likely others), there is a "blank" tooltip. It's larger if you have F3+H enabled, but even with it disabled, it is visible. It would be nice if this was hidden as it would make the GUIs more "clean" technically this applies to a lot of other GUIs (shop, auction, etc), though unlike the factions plugin most of those aren't custom/inhouse plugins, and many are plugins used in RPG, not just factions See screenshot (in the kit/lootbox GUIs, you don't see this